Average annual temperature is 10.0 °C
Absolute maximum temperature: 32.5 °C
Absolute minimum temperature: -23.9 °C
Number of sunny days: 113 days
Number of rainy days: 224 days
Number of snow days: 28 days
Look at detailed online map of Willow Grove
* Weather data for Willow Grove United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 10.9 | 17.4 | 15.3 | 28.5 | 29.9 | 31.2 | 32.5 | 29.8 | 31.3 | 28.4 | 14.0 | 12.5 |
| Average daytime temperature (°C) | 3.3 | 5.5 | 5.4 | 16.6 | 19.6 | 23.9 | 27.4 | 24.4 | 22.8 | 16.6 | 8.0 | 6.6 |
| Average temperature (°C) | 0.2 | -0.5 | 0.7 | 9.5 | 12.9 | 18.2 | 22.0 | 19.6 | 17.3 | 12.4 | 3.9 | 3.3 |
| Average night temperature (°C) | -2.6 | -5.1 | -3.4 | 3.9 | 6.8 | 13.4 | 17.5 | 15.8 | 13.1 | 9.2 | 0.8 | 0.8 |
| Absolute minimum temperature (°C) | -12.4 | -23.9 | -10.8 | -4.8 | 1.5 | 8.6 | 14.1 | 11.5 | 7.4 | -0.2 | -5.2 | -7.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 2.0 | 4.6 | 5.2 | 8.2 | 11.8 | 10.7 | 11.5 | 10.5 | 9.1 | 5.3 | 4.8 | 2.8 |
| Precipitation (mm) | 128 | 83 | 111 | 134 | 60 | 147 | 139 | 144 | 32 | 89 | 79 | 134 |
| Sunny days | 4 | 6 | 9 | 13 | 21 | 8 | 7 | 7 | 16 | 6 | 7 | 9 |
| Rainy days | 21 | 14 | 16 | 17 | 10 | 22 | 24 | 24 | 14 | 25 | 17 | 20 |
| Snow days | 6 | 8 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 2 |
The best time to visit Willow Grove during the most sunny months:
Months with the longest average daylight duration in Willow Grove:
The largest precipitation sum in Willow Grove is at